CN215118962U - Multi-pile fuel cell hydrogen supply and control device - Google Patents
Multi-pile fuel cell hydrogen supply and control device Download PDFInfo
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- CN215118962U CN215118962U CN202120804939.9U CN202120804939U CN215118962U CN 215118962 U CN215118962 U CN 215118962U CN 202120804939 U CN202120804939 U CN 202120804939U CN 215118962 U CN215118962 U CN 215118962U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/30—Hydrogen technology
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Abstract
The utility model discloses a multi-pile fuel cell hydrogen supply and control device, which comprises a hydrogen storage device, a pressure reducing valve component, an EJM hydrogen supply module and a fuel cell pile; EJM the number of hydrogen supply modules is the same as the number of fuel cell stacks and is connected with the fuel cell stacks one by one through pipelines, the EJM hydrogen supply modules are connected with a pressure reducing valve assembly through pipelines, the pressure reducing valve assembly is connected with a hydrogen storage device through pipelines, and each EJM hydrogen supply module is connected with a fuel cell controller through a controller domain network; the fuel cell controller may be connected to the controllers of a plurality EJM of hydrogen gas supply modules via a controller area network for data interaction. The multi-pile fuel cell hydrogen supply and control device adopts the modular design, reduces the connection of parts, pipelines and joints of a hydrogen supply system, reduces the risk of hydrogen leakage and is convenient to integrate; the module is internally provided with EJM controllers, single or multiple stacks of hydrogen can be supplied through the fuel cell controller, and the system is in parallel connection and operates cooperatively.
Description
Technical Field
The utility model belongs to the technical field of the fuel cell technique and specifically relates to a many piles of fuel cell hydrogen supply and controlling means is related to.
Background
The hydrogen fuel cell stack utilizes an energy conversion device for generating electric energy through electrochemical reaction of hydrogen and oxygen, the final product is water, and the hydrogen fuel cell stack has the characteristics of negative emission, no pollution, high energy utilization rate and the like, and is the development direction of new energy in the future.
In order to improve the utilization rate of hydrogen, optimize water management capacity and improve hydrogen safety performance, a hydrogen circulation component is an important component in a hydrogen supply system of a proton exchange membrane fuel cell, and the hydrogen circulation component mainly comprises a hydrogen circulation pump and an ejector.
Compared with a hydrogen circulating pump, the device has no moving parts, simple structure, reliable operation and no parasitic power, and is an ideal device for realizing the hydrogen recycling of the fuel cell.
Compared with an ejector, the hydrogen circulating pump has certain advantages in the aspects of active adjustment, high response speed, wide working interval and the like, but the equipment has higher requirement on the tightness of hydrogen and has poorer reliability.
Chinese patent CN108539222A discloses a vehicle-mounted fuel cell multi-module parallel hydrogen circulation system and a control method thereof, which comprises a hydrogen storage unit, a pressure reduction component, a first electromagnetic valve, a first gas-water separator, wherein the exhaust end of the first gas-water separator is connected with the hydrogen inlet of a fuel cell stack unit, the exhaust end of the first gas-water separator is connected with a drain valve, the fuel cell stack unit is formed by connecting a plurality of fuel cell stacks in parallel, the hydrogen outlet of the fuel cell stack is connected with a second electromagnetic valve and a second gas-water separator in sequence, the exhaust end of the second gas-water separator is connected with a hydrogen circulating pump, the outlet of the hydrogen circulating pump is connected with the inlet of the first gas-water separator, and the exhaust end of the second gas-water separator is connected with the drain valve. This patent multimode parallelly connected hydrogen circulation system through control solenoid valve, can realize effectual hydrogen circulation, improves the hydrogen utilization ratio, and circulation system can strengthen hydrogen return circuit drainage simultaneously, makes proton exchange membrane's water content effectively controlled.
At present, in a multi-pile fuel cell hydrogen supply system, hydrogen circulation mostly adopts unified circulation of each loop, and with the increase of the number of parallel electric piles, the hydrogen circulation flow is smaller and smaller under the condition that the power of a configured hydrogen circulation pump is not increased; if need keep the circulation flow unchangeable, then the power of the hydrogen circulating pump of required configuration need constantly increase, leads to the parasitic power of system to rise, and the overall efficiency of system reduces, in addition, adopts the unified circulation of each return circuit, after the hydrogen circulating pump breaks down, whole system will unable normal operating.
At present, each loop of the multi-pile fuel cell hydrogen supply system is connected in series for unified hydrogen supply, the hydrogen flow required by the operation of the pile is correspondingly increased along with the increase of the number of the parallel piles, the pipe diameter of a hydrogen supply pipeline is also required to be correspondingly increased, the volume of the system is also increased, in addition, the number of the anode pressure regulating valves is multiplied, and new challenges are brought to the control and regulation of the anode inlet pressure of the pile.
Although the current multi-stack fuel cell hydrogen supply system also adopts the scheme that each loop circulates respectively, the hydrogen supply is not in a modular design, the number of parts, pipelines and joints of the hydrogen supply system is large, the risk of hydrogen leakage at the joint of the joints is increased, and the adaptability to different stacks is poor; in addition, a control module is not added in the hydrogen supply system, so that the control operation and scheduling of the valve by a client are extremely difficult, and even under the condition of multi-stack operation, the operation scheduling and fault isolation of a plurality of hydrogen supply systems cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem among the prior art, a many piles of fuel cell hydrogen supply and controlling means is provided, each EJM hydrogen is supplied with the module and all is connected fuel cell controller through controller domain net, realize a plurality of hydrogen supply system operation scheduling and fault isolation, EJM hydrogen is supplied with the module and is adopted the modularized design, hydrogen supply system spare part and controller are all integrated in a module, reduce hydrogen supply system spare part, the pipeline, the articulate quantity, the hydrogen leakage risk of articulate has been reduced.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the hydrogen supply and control device comprises a hydrogen storage device, a pressure reducing valve assembly, EJM hydrogen supply modules and fuel cell stacks, wherein the number of the EJM hydrogen supply modules is the same as that of the fuel cell stacks, the hydrogen supply modules are connected with the pressure reducing valve assembly through pipelines in a one-to-one correspondence manner, the EJM hydrogen supply modules are connected with the pressure reducing valve assembly through pipelines, the pressure reducing valve assembly is connected with the hydrogen storage device through pipelines, and each EJM hydrogen supply module is connected with a fuel cell controller through a controller domain network.
Preferably, the EJM hydrogen supply module comprises a EJM controller, a medium-pressure hydrogen supply port connected with the pressure reducing valve assembly, an anode pressure regulating valve connected with the medium-pressure hydrogen supply port, an ejector connected with the anode pressure regulating valve, and a low-pressure hydrogen outlet connected with the ejector, a hydrogen medium pressure sensor is arranged on a pipeline between the medium pressure hydrogen supply port and the anode pressure regulating valve, a pressure relief valve and a hydrogen low-pressure sensor are arranged on a pipeline between the ejector and the low-pressure hydrogen outlet, the pressure relief valve is positioned between the ejector and the hydrogen low-pressure sensor and is connected with a pressure relief discharge port on the EJM hydrogen supply module, the ejector is connected with the steam-water separator through a pipeline, the steam-water separator is respectively connected with the hydrogen discharge port and the hydrogen circulation port of the EJM hydrogen supply module through pipelines, and a hydrogen discharge electromagnetic valve is arranged on the pipeline between the hydrogen discharge port and the steam-water separator; an anode hydrogen supply port of the fuel cell stack is connected with a low-pressure hydrogen outlet, and a reaction gas outlet of the fuel cell stack is connected with a hydrogen circulation port; the EJM controller is electric connection hydrogen middling pressure sensor, positive pole pressure control valve, ejector, relief valve, hydrogen low pressure sensor, catch water and exhaust solenoid valve respectively, EJM controller passes through the controller territory net and connects the fuel cell controller.
Preferably, the anode pressure regulating valve is a proportional solenoid valve or a hydrogen injector.
The utility model has the advantages that:
1. the EJM hydrogen supply module in the utility model adopts a modular design, and parts of the hydrogen supply system and the controller are integrated in one module, thereby reducing the number of the parts, pipelines and joints of the hydrogen supply system and obviously reducing the risk of hydrogen leakage at the joints;
2. in the utility model, each EJM hydrogen supply module is connected with the fuel cell controller through the controller domain network, so that the parallel operation and control of multiple electric piles can be conveniently integrated, and the operation scheduling and fault isolation of multiple hydrogen supply systems can be realized; after the single electric pile breaks down, the safety shutdown of the single electric pile can be controlled, and after the fault is relieved, the single electric pile can normally run, and other electric piles are not influenced by the broken electric pile during the running;
3. the utility model adopts the ejector scheme for hydrogen circulation in the EJM hydrogen supply module of the hydrogen supply system, has no parasitic power loss, and improves the efficiency of the system;
4. the utility model discloses many piles of fuel cell hydrogen supply system overall structure is integrated compact, and control scheme is reliable, and is with low costs.
Drawings
FIG. 1 is a schematic diagram of a multi-stack fuel cell hydrogen supply system according to the present invention;
fig. 2 is a schematic diagram of the EJM hydrogen supply module of the present invention.
Detailed Description
In order to make the technical field better understand the solution of the present invention, the following creates a further detailed description of the present invention with reference to the drawings and the embodiments.
The multi-stack fuel cell hydrogen supply system shown in fig. 1 comprises a hydrogen storage device 1, pressure reducing valve assemblies 2, EJM hydrogen supply modules 11 and fuel cell stacks 12, wherein the number of the EJM hydrogen supply modules 11 is the same as that of the fuel cell stacks 12, and the hydrogen supply modules and the fuel cell stacks are correspondingly connected through pipelines. The EJM hydrogen supply modules 11 are connected to a pressure reducing valve assembly 2 via pipes, the pressure reducing valve assembly 2 is connected to the hydrogen storage device 1 via pipes, and each EJM hydrogen supply module 11 is connected to the fuel cell controller 18 via a controller area network. A fuel cell stack 12 and an EJM hydrogen supply module 11 form a fuel cell control group, the pressure reducing valve assembly 2 CAN simultaneously connect with and supply hydrogen to a plurality of fuel cell control groups, and the fuel cell Controller 18 CAN simultaneously control a plurality of EJM hydrogen supply modules 11 through a Controller Area Network (CAN) for data interaction.
The EJM hydrogen supply module 11 comprises a EJM controller 10, a medium-pressure hydrogen supply port 13 connected with the pressure reducing valve assembly 2, an anode pressure regulating valve 4 connected with the medium-pressure hydrogen supply port 13, an ejector 5 connected with the anode pressure regulating valve 4, and a low-pressure hydrogen outlet 15 connected with the ejector 5. A hydrogen medium pressure sensor 3 is arranged on a pipeline between the medium pressure hydrogen supply port 13 and the anode pressure regulating valve 4, a pressure relief valve 6 and a hydrogen low pressure sensor 7 are arranged on a pipeline between the ejector 5 and the low pressure hydrogen outlet 15, the pressure relief valve 6 is positioned between the ejector 5 and the hydrogen low pressure sensor 7, and the pressure relief valve 6 is connected with a pressure relief discharge port 14 on the EJM hydrogen supply module 11. The ejector 5 is connected with a steam-water separator 8 through a pipeline, the steam-water separator 8 is respectively connected with EJM a hydrogen discharge port 17 and a hydrogen circulation port 16 of a hydrogen supply module 11 through pipelines, and a hydrogen discharge electromagnetic valve 9 is arranged on the pipeline between the hydrogen discharge port 17 and the steam-water separator 8. An anode hydrogen supply port of the fuel cell stack 12 is connected with a low-pressure hydrogen outlet 15, and a reaction gas outlet of the fuel cell stack 12 is connected with a hydrogen circulation port 16.
The EJM hydrogen supply module 11 can provide hydrogen to the anode of the fuel cell stack 12 at the pressure and flow rate required for the electrochemical reaction. The hydrogen stored in the hydrogen storage device 1 enters the pressure reducing valve assembly 2 through a pipeline to be reduced in pressure, and then is connected to the EJM hydrogen supply module 11 through the medium-pressure hydrogen supply port 13, the EJM controller 10 controls the anode pressure regulating valve 4 to regulate the supply pressure and flow rate of the hydrogen, the hydrogen regulated by pressure control flows out of the low-pressure hydrogen outlet 15 through the ejector 5 and enters the anode hydrogen supply port of the fuel cell stack 12, and the reacted anode gas enters the EJM hydrogen supply module 11 through the hydrogen circulation port 16.
Wherein, the EJM hydrogen supply module 11 adopts EJM controller 10 to control the opening frequency and opening time of the hydrogen discharge solenoid valve 9 to realize the hydrogen discharge and purge control strategy of the fuel cell system, and the hydrogen discharge solenoid valve 9 is discharged to the mixer through the hydrogen discharge port 17, mixed with air and finally discharged to the atmosphere. When the pressure release valve 6 operates in the fuel cell stack 12, if the EJM controller 10 detects that the anode pressure displayed by the hydrogen low-pressure sensor 7 exceeds the pressure release set pressure of the pressure release valve 6, the pressure release valve 6 is automatically opened to release pressure, the anode pressure is reduced, and the pressure release valve 6 is automatically closed when the recoil pressure of the pressure release valve 6 is reached; the hydrogen released by the pressure relief valve 6 is discharged into the mixer through the pressure relief discharge port 14, mixed with air and finally discharged into the atmosphere.
The EJM controller 10 is respectively and electrically connected with a hydrogen medium pressure sensor 3, an anode pressure regulating valve 4, an ejector 5, a pressure release valve 6, a hydrogen low pressure sensor 7, a steam-water separator 8 and a hydrogen discharge electromagnetic valve 9, and the EJM controller 10 is connected with the fuel cell controller 18 through a controller domain network. The EJM hydrogen supply module 11 is an independent integrated module as a whole, the built-in EJM controller 10 receives the control command of the fuel cell controller 18 in a CAN communication mode, and the EJM controller 10 reports the acquired data information and the self state information in real time, so that the structure integration is compact, the control scheme is reliable, and the cost is low.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (3)
1. A multi-stack fuel cell hydrogen supply and control device is characterized in that: including hydrogen storage device (1), relief pressure valve assembly (2), EJM hydrogen supply module (11) and fuel cell pile (12), the quantity of EJM hydrogen supply module (11) is the same with the quantity of fuel cell pile (12) and is connected through pipeline one-to-one, EJM hydrogen supply module (11) is connected with relief pressure valve assembly (2) through the pipeline, relief pressure valve assembly (2) are through tube coupling hydrogen storage device (1), and each EJM hydrogen supply module (11) passes through controller domain net and connects fuel cell controller (18).
2. The multi-stack fuel cell hydrogen supply and control device of claim 1, wherein: the EJM hydrogen supply module (11) comprises a EJM controller (10), a medium-pressure hydrogen supply port (13) connected with the pressure reducing valve component (2), an anode pressure regulating valve (4) connected with the medium-pressure hydrogen supply port (13), an ejector (5) connected with the anode pressure regulating valve (4) and a low-pressure hydrogen outlet (15) connected with the ejector (5), wherein a hydrogen medium-pressure sensor (3) is arranged on a pipeline between the medium-pressure hydrogen supply port (13) and the anode pressure regulating valve (4), a pressure relief valve (6) and a hydrogen low-pressure sensor (7) are arranged on a pipeline between the ejector (5) and the low-pressure hydrogen outlet (15), the pressure relief valve (6) is positioned between the ejector (5) and the hydrogen low-pressure sensor (7) and the pressure relief valve (6) is connected with a pressure relief discharge port (14) on the EJM hydrogen supply module (11), the ejector (5) is connected with a steam-water separator (8) through a pipeline, the steam-water separator (8) is respectively connected with EJM a hydrogen discharge port (17) and a hydrogen circulation port (16) of a hydrogen supply module (11) through pipelines, and a hydrogen discharge electromagnetic valve (9) is arranged on the pipeline between the hydrogen discharge port (17) and the steam-water separator (8); an anode hydrogen supply port of the fuel cell stack (12) is connected with a low-pressure hydrogen outlet (15), and a reaction gas outlet of the fuel cell stack (12) is connected with a hydrogen circulation port (16); the fuel cell system is characterized in that the EJM controller (10) is respectively and electrically connected with a hydrogen medium pressure sensor (3), an anode pressure regulating valve (4), an ejector (5), a pressure release valve (6), a hydrogen low pressure sensor (7), a steam-water separator (8) and a hydrogen discharge electromagnetic valve (9), and the EJM controller (10) is connected with the fuel cell controller (18) through a controller domain network.
3. The multi-stack fuel cell hydrogen supply and control apparatus of claim 2, wherein: the anode pressure regulating valve (4) is a proportional electromagnetic valve or a hydrogen injector.
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| CN202120804939.9U CN215118962U (en) | 2021-04-19 | 2021-04-19 | Multi-pile fuel cell hydrogen supply and control device |
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| CN202120804939.9U CN215118962U (en) | 2021-04-19 | 2021-04-19 | Multi-pile fuel cell hydrogen supply and control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113140755A (en) * | 2021-04-19 | 2021-07-20 | 绍兴学森能源科技有限公司 | Multi-stack fuel cell hydrogen supply system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113140755A (en) * | 2021-04-19 | 2021-07-20 | 绍兴学森能源科技有限公司 | Multi-stack fuel cell hydrogen supply system and control method thereof |
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